Subject Inclusion Criteria
All participants
- Be a healthy male, or healthy female participant (excluding diabetes mellitus in Part 3 participants) of non-child bearing potential. A female non-child bearing potential is one who is postmenopausal without menses for at least 1 year or whose status is post hysterectomy, bilateral oophorectomy, or tubal ligation.
- Be judged to be in good health based on medical history, physical exam, vital sign measurements, electrocardiogram (ECG) and laboratory safety tests
- Have adequate venous access to support execution of trial procedures
For Parts 1 and 2 (Healthy adult participants)
- Healthy male and female participants between the ages of 18 and 50 years (inclusive)
- Have a Body Mass Index (BMI) ≥18.5 kg/m^2 and ≤28.0 kg/m^2 at screening
- Have fasting blood glucose values at screening must be <100 mg/dL
- Be a non-smoker and/or has not used nicotine or nicotine-containing products (e.g., nicotine patch) for at least approximately 3 months.
For Part 3 (Adult participants with T1DM):
- Be male, or female of non-childbearing potential between 18 to 60 years of age
- Have a diagnosis of T1DM as defined by standard diagnostic criteria for ≥12 months at time of the pretrial (screening) visit
- Have a BMI ≥18.5 kg/m^2 and ≤32 kg/m^2 at screening.
- Be on stable doses of basal insulin over the 2-week period prior to screening and over the 2 weeks prior to dosing
- Have a total daily insulin requirement (basal plus prandial) of ≤1.2 units/kg at screening
- Have a hemoglobin A1C (HbA1c) ≤10% at the screening visit.
- Be a non-smoker or smoker who uses no more than 5 cigarettes or equivalent (e.g., e-cigarettes) per day over the prior 3-month period also may be enrolled (at the discretion of the investigator).
- Have a serum C-peptide concentration ≤0.7 ng/mL with a concurrent plasma glucose >90 mg/dL at screening or anytime within 24 weeks prior to screening.
For Part 4 (Adult participants with T2DM):
- Diagnosis of T2DM as defined by standard diagnostic criteria for ≥12 months at time of pretrial screening.
- Have a BMI ≥18.5 kg/m2 and ≤35.0 kg/m^2 at screening. BMI = mass (kg)/height (m)^2.
- Have a hemoglobin A1C (HbA1c) ≥6.5% and ≤10.0%.
- T2DM participants are not required to have been on insulin. If using insulin as background therapy, subjects should have a total daily insulin requirement of ≤1.2 units/kg, and have been on stable doses of basal insulin over the 2-week period prior to screening and over the 2 weeks prior to dosing.
- Be a non-smoker or smoker who uses no greater than 5 cigarettes or equivalent (e.g., e-cigarettes) daily over the prior 3-month period.
Subject Exclusion Criteria
All participants
- Is mentally or legally incapacitated
- Has a history of clinically significant endocrine (excluding diabetes mellitus in Part 3 participants), gastrointestinal, cardiovascular, hematological, hepatic, immunological, renal, respiratory, genitourinary or major neurological (including stroke and chronic seizures) abnormalities or diseases.
- Has a systolic blood pressure (SBP) ≥140 mm Hg and/or a diastolic blood pressure (DBP) ≥90 mm Hg at screening.
- Is positive for hepatitis B surface antigen, hepatitis C antibodies or human immunodeficiency virus (HIV) at screening.
- Has a history of cancer (malignancy) Exceptions: (1) Participants with adequately treated non-melanomatous skin carcinoma or carcinoma in situ of the cervix may participate in the trial; (2) Participants with other malignancies which have been successfully treated ≥10 years prior to the pretrial (screening) visit
- Has a history of significant multiple and/or severe allergies (e.g. food, drug, latex allergy), or has had an anaphylactic reaction or significant intolerability (i.e. systemic allergic reaction) to prescription or non-prescription drugs or food.
- Had major surgery, donated or lost 1 unit of blood (approximately 500 mL) within 4 weeks prior to the pretrial (screening) visit.
- Has participated in another investigational trial within 4 weeks.
- Has been randomized to, and received MK-5160 in prior clinical studies.
- Has a QTcF interval >450 msec, has a history of risk factors for Torsades de Pointes (e.g., heart failure/cardiomyopathy or family history of Long QT Syndrome).
- Has uncorrected hypokalemia
- Has uncorrected hypomagnesemia
- Is taking concomitant medications that prolong the QT/QTc interval.
- Is unable to refrain from or anticipates the use of any medication, including prescription and non-prescription drugs or herbal remedies beginning approximately 2 weeks prior to administration of the initial dose of trial drug, throughout the trial, until the post-trial visit.
- Has had a vaccination within 12 weeks of the pretrial visit.
- Consumes greater than 3 glasses of alcoholic beverages per day.
- Consumes excessive amounts, defined as greater than 6 servings caffeinated beverages per day.
- Is currently a regular or recreational user of cannabis, any illicit drugs or has a history of drug (including alcohol) abuse within approximately 6 months
- Has used systemic (intravenous, oral, inhaled) glucocorticoids within 3 months of screening or is anticipated to require treatment with systemic glucocorticoids during study participation.
For Part 1 and Part 2 (Healthy Adult Participants)
- Has an estimated creatinine clearance of <90 mL/min based on Cockcroft-Gault equation
For Part 3 (Adult participants with T1DM):
- Has a history of diabetic ketoacidosis in the last 6 months prior to screening.
- Has an estimated creatinine clearance of <60 mL/min based on the Cockcroft-Gault equation at screening
- Has the diagnosis of hypoglycemia unawareness, or has had one or more severe hypoglycemic episodes associated with hypoglycemic seizures, comas or unconsciousness within 6 months prior to dosing.
- Has other major medical problems requiring medication (i.e., history of myocardial infarction (MI), hypercholesterolemia).
- Has a known history of celiac disease or significant food allergy, at the discretion of the investigator and Sponsor.
- Has a history of hypersensitivity to pharmacologic insulins or to any of the inactive ingredients in recombinant human insulin, or to any E.coli-derived drug product.
For Part 4 (Adult participants with T2DM):
- Participant has an estimated creatinine clearance of <60 mL/min based on the Cockcroft-Gault equation.
- Has a history of diabetic ketoacidosis in the last 6 months prior to screening.
- Has the diagnosis of hypoglycemia unawareness, or has had one or more severe hypoglycemic episodes associated with hypoglycemic seizures, comas or unconsciousness within 6 months prior to dosing.
- Has a known history of celiac disease or significant food allergy, at the discretion of the Investigator and Sponsor.
- Has been treated with a thiazolidinedione or injectable non-insulin anti-diabetic therapy within the past three months prior to dosing.
- Has a history of hypersensitivity to pharmacologic insulins or to any of the inactive ingredients in regular human insulin, or to any E.coli-derived drug product.